نتائج البحث - "Clifford torus"

1

Academic Journal

On the index of stability of (r, s)-linear Weingarten Clifford tori

المؤلفون: Marco Antonio Lázaro Velásquez

المصدر: Selecciones Matemáticas, Vol 10, Iss 01, Pp 102-113 (2023)

مصطلحات موضوعية: unit euclidean sphere, higher order mean curvatures, (r, s)-linear weingarten clifford torus, jacobi operator, Applied mathematics. Quantitative methods, T57-57.97, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://revistas.unitru.edu.pe/index.php/SSMM/article/view/5009; https://doaj.org/toc/2411-1783

URL الوصول: https://doaj.org/article/a4f5c462cdfe4d24bcd376fec75db6bf

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2

Academic Journal

Darboux theory of integrability on the Clifford n-dimensional torus

المؤلفون: Llibre, Jaume, Valls, ClÃ udia

مصطلحات موضوعية: Darboux integrability, Clifford torus, Invariant algebraic variety, Exponential factor, Meridian

Relation: Agencia Estatal de InvestigaciÃ³n PID2022-136613NB-I00; European Commission 777911; AgÃ¨ncia de GestiÃ³ d'Ajuts Universitaris i de Recerca 2021/SGR-00113; Bulletin des Sciences Mathematiques; Vol. 192 (May 2024), art. 103403; https://ddd.uab.cat/record/299747; urn:10.1016/j.bulsci.2024.103403; urn:oai:ddd.uab.cat:299747; urn:scopus_id:85186963411; urn:articleid:00074497v192p103403; urn:gsduab:5923; urn:oai:egreta.uab.cat:publications/083f6ba1-42b6-4292-9c91-1619aeccd0d3

الاتاحة: https://ddd.uab.cat/record/299747

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3

Academic Journal

On the index of stability of (r, s)-linear Weingarten Clifford tori

المؤلفون: Lázaro Velásquez, Marco Antonio

المصدر: Selecciones Matemáticas; Vol. 10 Núm. 01 (2023): Enero - Julio; 102 - 113 ; Selecciones Matemáticas; Vol. 10 No. 01 (2023): January - July; 102 - 113 ; Selecciones Matemáticas; v. 10 n. 01 (2023): Janeiro - Julho; 102 - 113 ; 2411-1783

مصطلحات موضوعية: Unit Euclidean sphere, higher order mean curvatures, (r, s)-linear Weingarten Clifford torus, Jacobi operator, index of (r, s)-stability

وصف الملف: application/pdf

Relation: https://revistas.unitru.edu.pe/index.php/SSMM/article/view/5009/5551; https://revistas.unitru.edu.pe/index.php/SSMM/article/view/5009

الاتاحة: https://revistas.unitru.edu.pe/index.php/SSMM/article/view/5009

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4

Academic Journal

Mapping of Hückel zigzag carbon nanotubes onto independent polyene chains: Application to periodic nanotubes

المؤلفون: François, Grégoire, Angeli, Celestino, Bendazzoli, Gian Luigi, Brumas, Véronique, Evangelisti, Stefano, Berger, J. Arjan

المساهمون: François, Grégoire, Angeli, Celestino, Bendazzoli, Gian Luigi, Brumas, Véronique, Evangelisti, Stefano, Berger, J. Arjan

مصطلحات موضوعية: The electric polarizability and the spread of the total position tensors are used to characterize the metallic vs insulator nature of large (finite) systems. Finite clusters are usually treated within the open boundary condition formalism. This introduces border effects, which prevent a fast convergence to the thermodynamic limit and can be eliminated within the formalism of periodic boundary conditions. Recently, we introduced an original approach to periodic boundary conditions, named Clifford boundary conditions. It considers a finite fragment extracted from a periodic system and the modification of its topology into that of a Clifford torus. The quantity representing the position is modified in order to fulfill the system periodicity. In this work, we apply the formalism of Clifford boundary conditions to the case of carbon nanotubes, whose treatment results in a particularly simple zigzag geometry. Indeed, we demonstrate that at the Hückel level, these nanotubes, either finite or periodic, are formally equivalent to a collection of non-interacting dimerized linear chains, thus simplifying their treatment. This equivalence is used to describe some nanotube properties as the sum of the contributions of the independent chains and to identify the origin of peculiar behaviors (such as conductivity). Indeed, if the number of hexagons along the circumference is a multiple of three, a metallic behavior is found, namely a divergence of both the (per electron) polarizability and total position spread of at least one linear chain. These results are in agreement with those in the literature from tight-binding calculations

وصف الملف: STAMPA

Relation: info:eu-repo/semantics/altIdentifier/pmid/37671957; info:eu-repo/semantics/altIdentifier/wos/WOS:001138793200002; volume:159; issue:9; firstpage:094106-1; lastpage:094106-12; numberofpages:12; journal:THE JOURNAL OF CHEMICAL PHYSICS; https://hdl.handle.net/11392/2537216

الاتاحة: https://hdl.handle.net/11392/2537216
https://doi.org/10.1063/5.0153075
https://pubs.aip.org/aip/jcp/article-abstract/159/9/094106/2909725/Mapping-of-Huckel-zigzag-carbon-nanotubes-onto?redirectedFrom=fulltext

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5

Academic Journal

Total mean curvature surfaces in the product space S^n x R and applications

المؤلفون: Albujer, Alma L., Ferreira da Silva, Sylvia, Reis dos Santos, Fábio R.

المصدر: Albujer, Alma L.; da Silva, Sylvia F.; dos Santos, Fábio R. Total mean curvature surfaces in the product space Sn×R and applications. Proc. Edinb. Math. Soc. (2) 66 (2023), no.2, 346-365. https://doi.org/10.1017/S0013091523000196

مصطلحات موضوعية: ℋ-surface, Product space, Minimal surface, Clifford torus, Veronese surface

وصف الملف: application/pdf

Relation: https://doi.org/10.1017/S0013091523000196; Gobierno de España. PID2021-126217NB-I00; Junta de Andalucía. 1380930-F; http://hdl.handle.net/10396/26416

الاتاحة: http://hdl.handle.net/10396/26416

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6

Academic Journal

Willmore surfaces and Hopf tori in homogeneous 3-manifolds

المؤلفون: Albujer, Alma L., Santos, Fábio R. dos

المصدر: Annals of Global Analysis and Geometry (2022)

مصطلحات موضوعية: Willmore surface, Homogeneous space, Constant extrinsic curvature, Clifford torus, Hopf torus

وصف الملف: application/pdf

Relation: https://doi.org/10.1007/s10455-022-09844-2; Gobierno de España. PGC2018-097046-B-I00; Gobierno de España. MCIN/AEI/10.13039/501100011033/FEDER; Junta de Andalucía. PY20-01391; http://hdl.handle.net/10396/22916

الاتاحة: http://hdl.handle.net/10396/22916

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7

Dissertation/ Thesis

El flujo lagrangiano de la curvatura media

Thesis Advisors: Castro-López, Ildefonso, Universidad de Jaén. Departamento de Matemáticas

المصدر: Lerma-Fernández, Ana-María. El flujo lagrangiano de la curvatura media, 2013. 135 p. [http://hdl.handle.net/10953/463]

مصطلحات موضوعية: Flujo de la curvatura media, Superficies lagrangianas, Toro de Clifford, Mean curvature flow, Lagrangian surfaces, Clifford torus, Ecuaciones de Lagrange, Superficies (Matemáticas)

Time: 514.7

URL الوصول: http://hdl.handle.net/10953/463

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8

Dissertation/ Thesis

El flujo lagrangiano de la curvatura media

المؤلفون: Lerma-Fernández, Ana-María

Thesis Advisors: Universidad de Jaén. Departamento de Matemáticas, Castro-López, Ildefonso

مصطلحات موضوعية: Flujo de la curvatura media, Superficies lagrangianas, Toro de Clifford, Mean curvature flow, Lagrangian surfaces, Clifford torus, Ecuaciones de Lagrange, Superficies (Matemáticas)

Time: 514.7

URL الوصول: http://hdl.handle.net/10953/463

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9

Academic Journal

Polynomial vector fields on the Clifford torus

المؤلفون: Llibre, Jaume, Murza, Adrian

مصطلحات موضوعية: Invariant parallels, Invariant meridians, Polynomial vector field, Clifford torus

وصف الملف: application/pdf

Relation: Ministerio de Ciencia e InnovaciÃ³n MTM2016-77278-P; AgÃ¨ncia de GestiÃ³ d'Ajuts Universitaris i de Recerca 2017/SGR-1617; European Commission 777911; International journal of bifurcation and chaos in applied sciences and engineering; Vol. 31, Issue 4 (March 2021), art. 2150057; https://ddd.uab.cat/record/239783; urn:10.1142/S0218127421500577; urn:oai:ddd.uab.cat:239783; urn:gsduab:4577; urn:scopus_id:85103594852; urn:articleid:17936551v31n4p2150057

الاتاحة: https://ddd.uab.cat/record/239783

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